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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/104578] [12 Regression][CWG1315] accepts invalid partial 
 template specialization, non-type template argument depends on a template
 parameter
Date: Wed, 06 Apr 2022 14:44:32 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104578

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[12 Regression] accepts     |[12 Regression][CWG1315]
                   |invalid partial  template   |accepts invalid partial
                   |specialization, non-type    |template specialization,
                   |template argument depends   |non-type template argument
                   |on a template parameter     |depends on a template
                   |                            |parameter
                 CC|                            |jason at gcc dot gnu.org,
                   |                            |ppalka at gcc dot gnu.org
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> ---
This was changed by r12-1093, which implements https://wg21.link/cwg1315 .=
=20
This testcase seems like exactly the sort of thing that DR1315 intended to
allow.=